Remove autoFields from count method

When autoFields was set to true and count method was triggered, autofields were added to the query and SQL failed due to wrong format.

src/ORM/Query.php

@@ -474,6 +474,7 @@ public function applyOptions(array $options) {
  */
 	public function count() {
 		$query = clone $this;
+		$query->autoFields(false);
 		$query->limit(null);
 		$query->order([], true);
 		$query->offset(null);